Supercapacitor Power Buffering for Stable DC Renewable Power
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Solution Overview
Problem
Existing power buffering systems relying on batteries are limited by thermal runaway and inefficiencies, necessitating an alternative energy storage solution for stable and reliable power delivery from renewable energy sources.
Innovation Solution
A power buffering system utilizing high-power, low-latency supercapacitors controlled by a microcontroller to manage charging and discharging, providing a stable power source from variable renewable sources like solar and wind.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If batteries are used for power buffering, then energy storage and release is achieved, but thermal runaway and limited power density occur
Solution Approach 1:
The patent changes the fundamental energy storage mechanism from electrochemical (batteries) to electrostatic (supercapacitors), fundamentally altering the operating parameters to eliminate thermal runaway while maintaining power buffering capability. This parameter change enables safe operation at higher power densities without the thermal risks inherent in battery systems.
Solution Approach 2:
The patent employs multiple smaller supercapacitor units that can be individually replaced if needed, rather than relying on a single large battery system. This modular approach with shorter-lived but safer components eliminates the thermal runaway risk while providing continuous power buffering through parallel operation.
2Quantity of substance
If batteries are used for power buffering, then energy storage is achieved, but power density is limited
Solution Approach 1:
The patent divides the power buffering system into multiple parallel supercapacitor units, each contributing to the total energy storage capacity. This segmentation allows the system to achieve high power density through parallel connections while maintaining substantial total energy storage capability, overcoming the fundamental limitation of battery-based systems.
Solution Approach 2:
The patent combines multiple supercapacitor units in a parallel configuration to achieve both high power density and substantial energy storage capacity simultaneously. This merging of multiple high-power low-capacity units creates a system that delivers both high instantaneous power and sustained energy storage, resolving the contradiction between power density and total energy capacity.
3Power
If supercapacitors are used for power buffering, then power density and reliability are improved, but system complexity increases
Solution Approach 1:
The patent designs the supercapacitor buffering system to perform multiple functions simultaneously: power buffering, voltage regulation, and transient response. This multi-functionality reduces the need for separate components and simplifies the overall system architecture despite using multiple supercapacitor units, as a single system achieves what would otherwise require multiple specialized components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Delivers uninterrupted, efficient, and reliable power to loads using supercapacitors, overcoming battery limitations with high power density and long cycling life, suitable for homes, data farms, and automobiles.
Implementation Method 1
The device includes a microcontroller, a plurality of buffering units coupled to the microcontroller, wherein each of the plurality of buffering units comprises a plurality of relays coupled to a plurality of supercapacitors
Data Source
AI summary
A power buffering device utilizing supercapacitors to a provide safe, efficient, and reliable maximum power solution for direct current (DC) electronic systems. The power buffering device utilizes a microcontroller, switching elements and multiple supercapacitors to provide uninterrupted, substantially constant power to a load or output device from a variable power source, such as solar, wind and other renewable energy sources.